[Adherence to treatment in polymedicated patients using Monitored Dosage Systems (MDS) and their impact on health].

Monitored Dosage Systems (MDS) are an efficient, reliable and approved device for drug reconditioning in pharmacy. These systems imply a review on proper drug use and the collaboration between primary health care and pharmacists. The case study describes a female patient with a surgical intervention due to lumbosciatica in 2021 and 2022. Patient describes uncontrolled chronic pain and confusion related to improper drug use. During regular dispensing of her medication, these medicine-related problems (MRP) were detected and the patient was referred to the MDS service. After its implementation, the patient's confusion was eliminated and pain management was achieved, increasing her quality of life. As a conclusion, the different health services provided by the pharmacy can improve a patient's quality of life, treatment adherence and MRP detection.